I'm sorry but did you really think he has the mentality to even think that his father inlaw is actually manipulating him? Tbh who can he trust at this point cuz almost all of the seme's fam are crazy asf, not to mention that MC actually suffered cuz of the ML and dustrusts him the most but he started trusting him after quite some time since ML tried(ig). So what is the normal reaction? Ofc the MC is shocked but he couldn't deny it since he knows what kind of person ML is(from his perspective), so he concluded that what the father-in-law was telling the truth and this is also concerning his child, this is like his weakest point and if something happened to Siyeon, I don't think MC would even continue living(suicide probs). FYI HE IS NOT DUMB HE IS FCKING SENSITIVE AND HAS BEEN ABUSED ASWELL AS MANIPULATED NUMEROUS TIMES, not to mention he's been emotionally sexually exploitated. Imagine just reacting how a victim should and then people sucgh as yourself, proceed to call these victims "dumb" and "embarassing" so think before you click cuz ur not as smart as the MC if you were in his situation, I don't particularly like this manhwa but that doesn't mean I hate MC (︶︿︶)＝凸
Bro the MC didn’t even think twice, this is embarrassing. Even his kid is smarter, I get being insecure, but why the heck would he believe completely the dad, without even think I am so spechless, this is the first time I have seen such an dumb mc